Draft-rigging for railway-cars.



2 Sheets-Shut l.

Patented Feb. l9, ism. H. c. BUHOUP. DRAFT meme FOR RAILWAY CABS.

(Application filed Nov. 8, 1900.)

. n T n" u =2: S ..r .z l 1 2% W \h A. r J

(No Model.)

A \I Q ivvenfor da /52% r u \\\N\\% ym 0 0 Z0 $676 56 aw No. 668,574. Patented Feb; l9, I90I.

H. C. BUHOUP. DRAFT BIGGING' FOR RAILWAY CARS.

(Application tiled Nov. 8, 1900.)

(No Modei.) 2 Sheets-Sheet 2.

UNITED STATES PATENT OFFIQE.

HARRY C. BUHOUP, OF CHICAGO, ILLINOIS.

DRAFT-RIGGING FOR RAILWAY-CARS.

SPECIFICATION forming part of Letters Patent No. 668,574, dated February 19, 1901.

Application filed November 8, 1900- Serial No. 35,824. kNo model.)

To all whom it may concern.-

Be it known that I, HARRY G. BUHoUP, a citizen of the United States, residing at Ohicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Draft-Rigging for Railway- Cars; and I hereby declare the followingto be a full, clear, and exact description of the same, reference being had I to the accompanying drawings, in which Figure 1 is a horizontal section of draftgear embodying my invention, the parts being in the normal position or at rest on the center. Fig. 2 is a similar section, the parts being in action or in the position they occupy when under draft.

Like symbols refer to like parts wherever they occur.

My invention relates to that class of draftgear commonly termed friction draft-gear, wherein the spring-resistance tothemovement of the draw-bar in draft and buffing is augmented and modified by frictional resistance, induced by the combination, with the draw-bar, of friction slides or plates yieldingly or spring supported of the general character covered by my Letters Patent No. 423,727, granted March 18, 1890, and the present invention may be considered as an improvement thereon. In this class of draftgear as at present constructed the typical combination of elements may be said to be a plurality of connected reverse inclines (one or more for draft and mom more for buflfing) combined and coacting with a similar connected series of spring-supported inclines' As a result of such a construction and combination there necessarily existsloss of contact (or space) between either the draft or the buffing slides, according to whether the drawbar is pulled out or forced in, and unless the reversing is very slow or gradual, which seldom occurs in service, the draft-gear is subjected to violent shocks and jars which tend greatly to its deterioration and destruction.

To overcome these objections is the object of my present invention; and to this end, generally stated, it consists in the combination, with a draw-bar, of independently-yielding draft and bufling friction-slides so arranged that all thefriction-faces are maintained in constant contact during the operation of the draw-bar, and such a construction embodies one featureof my invention.

In carrying out my invention I prefer to combine With a plurality of fixed reverselyarranged inclines located on the draw-bar a series of independently-yielding or springsupported reversely arranged friction inclines mounted on the car-body; but it will be evident to the skilled mechanic that the location of the fixed and yieldinginclines may be reversed, and either of said arrangements are contemplated by me and form a secondary feature of my invention.

There are other minor features of invention, all as will hereinafter more fully appear.

I will now proceed to describe my invention more fully, so that others skilled in the art to which it appertains may apply the same.

In the drawings, A indicates the draw-bar, (partly broken off,) and a a friction-inclines fixed thereon. In the present instance the draw-bar is shown as a strap-bar, and the friction-inclines a a, which may be integral and constitute a cored casting A or otherwise constructed, as preferred,are rigidly secured to the draw-bar A by a tail-strap R, though,

if preferred, the well-known tail-bolt construction may be adopted.

1) b indicate independently-yielding inclines arranged on opposite sides of the draftbar and coacting with the respective frictioninclines a ct of the draw-bar A. For the purposes of this description I will term the inclines b the yielding draft-slides or yielding friction-plates and those marked b the yielding buffing-slides or yielding friction-plates, it beingunderstood that the inclines a, a or draft and buffing slides, which coact with said yielding draft and buffer slides, are or may be fixed with relation to each other. The draft and buffing inclines are reversely arranged, and in case of the independently-yielding inclines (marked b b) are preferably formed with cups or sockets 0, adapted to slide within housings or guideboxes D and to include springs O O, which maintain a constant contact between the several inclines or friction-plates (II/b and a b;

D indicates housings or guide-boxes for the reception of the telescoping cups or sockets of the friction plates or inclines, and said boxes may be divided into compartments by the partition orguide wall (I, or, if preferred, a separate housing or guide-box may be provided for each friction-plate of the series, and in either case the construction may be such as to utilize also the friction between the cup or socket c c and the guide-box D. The guide-boxes or housings D D are preferably connected by an intermediate web or plate I), which maybe cast integral therewith, the ends of the boxes D D being closed by heads I) D bolted thereto, or in other suitable manner.

0 0 indicate nested springs within the cups or sockets c c of the friction-slides and having their hearings on the heads D D of the guide-boxes or housings D D. For purposes of illustration I have shown nested springs.

C C',the outer (shorter and strongerlof which, C, is to assume the load while the frictionslide is in operation, while the inner or lighter spring 0' is what may be termed a followerspring, and is constantly under compression to insure and maintain the contact of the friction slides or inclines at all times. It will be evident, however, to one skilled in the art that a single spring under constant compression may be substituted for the nested springs, but will not be so effective or desirable.

The housings or guide-boxes D D are socured to the draft-timbers of a car by bolts and straps (not shown) or in other of the several well-known suitable Ways of connecting draft-rigging to the bed of the car.

The construction being substantially such as hereinbefore set forth, the draft-rigging will operate as follows: Draft being made on the draw-bar A, the friction draft-inclines a thereon coacting with the yieldingly or spring-supported friction-slides I) will force back the springs O O of said slide, thus maintaining a constant spring-applied frictional resistance to the outward movement of the draw-bar A, (see Fig. 2,) while the springs of the reverse and independently-moving inclines b I) will cause the advance of the buffing-inclines and maintain their contact with the corresponding bufling-inclines a on the draw-bar A, so that on the reversal or inward movement of the draw-bar A, as in buffing, the bufiingfriction-inclines and their springs will at once assume the load without shock or jar, and the draft friction-slides I) will thereafter follow and maintain cont-act with their friction-plates a during the inward or bufiing action of the draw-bar in like manner as did the buliing friction-slides b with the friction plates a during the outward movement of the drawbar A.

For purposes of illustration the construction shown and described by me has embraced but two sets of draft and bufiing plates oppositely placed with relation to the draftbar; but it is evident that one of said sets might be replaced by parallel frictionplates on one side of the draw-bar or that the friction-surfaces may be multiplied to any extent permissible and practicable with a given' length of draw-bar without departing from the spirit and scope of my invention, provided only that the yielding bu ffing friction-plates and the yielding draft frictionplates be independent of each other in their movement and be yieldingly supported so as to maintain a constant eontact'of both the draft and the buffiug friction-plates.

Having thus described myinvention, what I elaim,and desire to secure by Letters Patent, is

1. In a friction draft-gear, the combination With a draW-barhavinga draft incline or slide and a bufier incline or slide, of separate draft and buffer slides which coaet therewith said latter slides independent of each other, and

means for yieldingly supporting one of saidbulfer-slides and maintaining constant contact between the buffer-slides during the operation of the draw-bar; substantially as and for the purposes specified.

2. In a friction draft-gem, the combination with a draw-bar having a draft incline or slide and a buffer incline or slide, of separate draft and buffer slides which coaet therewith said latter slides independent of each other, and means for yieldingly supporting one of said draft-slides and maintaining constant contact between the draft-slides during the operation of the draw-bar, substantially as and for the purposes specified.

3. In a friction draft-gear, the combination with a draw-bar having a draft incline orslide and a buffer incline or slide, of separate draft and buffer inclines or slides which coaet therewith said latter slides independent of each other, and means for yieldingly supporting one of said draft-slides and one of said bufferslides and maintaining constant contact between all of said buffer-slides and all of said draft-slides during the operation of the drawbar, substantially as and for the purposes specified.

t. In afriction draft-gear, the combination with a draw-bar having a draft-incline and a buffing-incline, said inclines reversely arranged, of separate draft and buffer slides which are also reversely arranged and coaet therewith said latter slides independent of each other, and springs which yieldingly support said separate draft and buifing slides, substantially as and for the purposes speeified.

5. In a friction draft-gear, the combination with a draw-bar of a draft incline or slide and a buffing incline or slide, separate draft and buffing slides which coaet therewith and are independently movable, and springs for yieldingly supporting said separate and independently-movable draft and buffer slides said springs being under constant compression whereby constant contact is maintained between all the draft and allthe buffer slides, substantially as and for the purposes specified.

6. In a friction draft-gear, the combination with a drawbar having fixed reversely-arrangedinclines, of separate draft and buffing In testimony whereof I affix my signature, slides each of which is yieldingly supported in presence of two Witnesses, this 5th day of m and movable independently of the other, said November, 1900. latter slides being also reversely arranged,

and a housing provided with a separate com- HARRY BUHOUP partment for each of said independently- Witnesses: movable draft and bufling slides, substan- A. J. SCHEVERS, tially as and for the purposes specified. JAMES W. DUNOVAN. 

